A+ IT Essentials Exam 2 Flashcards
What is a good safety precaution to take when opening a computer case?
Place tape over the case edges that are sharp.
Explanation:
Computer cases can easily be a hazard to technicians. Before working inside a computer, examine the case edges and put tape over any of the sharp edges to prevent physical harm. A case is opened, but seldom removed when installing or removing parts. Loose clothing should be secured before you work inside a computer.
What does the “A” in P-A-S-S remind a person to do while using a fire extinguisher?
Aim the fire extinguisher at the base of the fire.
Explanation:
When using the P-A-S-S memory aid with a fire extinguisher, the “A” in P-A-S-S is for aiming at the base of the fire and not at the flames.
How is a power supply commonly attached to a tower case?
screws
Explanation:
To install a power supply into a PC tower case, open the case, align the power supply with the case holes, and use screws to attach the power supply to the case.
A technician is replacing a power supply. Which two factors should the technician consider when obtaining the replacement part?
type of case
wattage
Explanation:
A technician should consider the following when choosing a power supply:Type of motherboard
Wattage
Number and type of connectors
Type of case
The computer input power level is either 120 or 240 VAC. Output voltages are standard 3.3, 5, and 12 VDC. A power supply normally has one fan and this is not a selectable option on a fan.
A technician is installing additional memory in a computer. How can the technician guarantee that the memory is correctly aligned?
A notch in the memory module should be aligned with a notch in the memory slot.
What is used to prevent the motherboard from touching metal portions of the computer case?
standoffs
Explanation:
Screws and standoffs that are non-metallic may be insulators and protect against grounding.
Which statement describes the purpose of an I/O connector plate?
It makes the I/O ports of the motherboard available for connection in a variety of computer cases.
Explanation:
The I/O plate connects to the back of the case and has holes for each of the ports on the motherboard to push through, allowing the motherboard to be used in many different cases regardless of the number of ports on the board or their layout.
What are three important considerations when installing a CPU on a motherboard?
Antistatic precautions are taken.
The CPU is correctly aligned and placed in the socket.
The CPU heat sink and fan assembly are correctly installed.
Explanation:
The CPU is sensitive to static discharges. Its pins are very delicate and it works at high temperatures, so precautions must be taken. If the CPU has been used in another machine or if the fan is being replaced, you might need to remove the old thermal compound using isopropyl alcohol (not on the CPU contacts). The battery does not need to be removed from the motherboard during the CPU installation. This would cause the saved BIOS settings to be lost. Minimum force should be needed to lock the CPU load lever into place.
When a new PC is being built, which component has the most influence when selecting the case and power supply?
motherboard
Explanation:
The choice of motherboard determines the type of case and power supply. The form factor of a motherboard must match the type of case and power supply. RAM modules, video cards, and sound cards are installed on the motherboard. They must be compatible with the motherboard. A hard disk is attached to the case, but the dimensions of the drive bays are standardized.
Which two factors must be considered when replacing old RAM modules in a PC?
The new RAM must be compatible with the motherboard.
The speed of the new RAM must be supported by the chipset.
Explanation: When the RAM on a motherboard is being replaced or upgraded, the new RAM module must be compatible with the current motherboard. In addition, the speed of the new RAM must be supported by the chipset.
Which type of motherboard expansion slot sends data one bit at a time over a serial bus?
PCIe
Explanation:
A PCIe expansion slot connects to a serial bus that sends data one bit at a time at a much faster rate than the older PCI slot that connects to a parallel bus.
Which PC motherboard bus is used to connect the CPU to RAM and other motherboard components?
front-side
Explanation:
The front-side bus (FSB) is used to connect the CPU to RAM, expansion cards, and other motherboard components. The speed of this bus is relevant when selecting replacement motherboards and RAM.
Where is buffered memory commonly used?
servers
Explanation:
Buffered memory is used in computers that have a lot of RAM such as servers and high-end workstations. Buffered memory should be avoided in gaming, business, and home computers because it slows the memory speed.
A technician has been asked to upgrade a processor and needs to do some research. The computer is just a couple of years old. What are two types of processor packages that could be used inside the computer?
LGA
PGA
Explanation:
Two architectures used with CPUs today are the pin grid array (PGA) and the land grid array (LGA). The PGA has pins on the bottom of the processor. The LGA has pins within the socket.
A student is looking to add memory in order to speed up a tower computer. Which type of memory module should the student be looking for?
DIMM
Explanation:
Motherboards in tower computers accept dual inline memory modules (DIMMs) in the memory expansion slots. A motherboard supports a particular type of DIMM such as a DDR3 or DDR4 module.
